CN1278758A - Method for automatic manufacture of and printing on astigmatic contact lenses and apparatus therefor - Google Patents

Method for automatic manufacture of and printing on astigmatic contact lenses and apparatus therefor Download PDF

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Publication number
CN1278758A
CN1278758A CN98811215A CN98811215A CN1278758A CN 1278758 A CN1278758 A CN 1278758A CN 98811215 A CN98811215 A CN 98811215A CN 98811215 A CN98811215 A CN 98811215A CN 1278758 A CN1278758 A CN 1278758A
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CN
China
Prior art keywords
toric lens
pallet
lens casting
casting cup
cup
Prior art date
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Granted
Application number
CN98811215A
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Chinese (zh)
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CN1087218C (en
Inventor
R·P·卡梅隆
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Novartis AG
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Wesley - Jason Inc
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Publication date
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Publication of CN1278758A publication Critical patent/CN1278758A/en
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Publication of CN1087218C publication Critical patent/CN1087218C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00173—Conveying moulds
    • B29D11/00182—Conveying moulds using carrier plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/006—Handling moulds, e.g. between a mould store and a moulding machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00019—Production of simple or compound lenses with non-spherical faces, e.g. toric faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00317—Production of lenses with markings or patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00423—Plants for the production of simple or compound lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00865—Applying coatings; tinting; colouring
    • B29D11/00894—Applying coatings; tinting; colouring colouring or tinting
    • B29D11/00903—Applying coatings; tinting; colouring colouring or tinting on the surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/808—Lens mold

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Robotics (AREA)
  • Eyeglasses (AREA)

Abstract

A method of automatic manufacture of an astigmatic contact lens having a toric portion and a ballast portion such that said ballast portion causes the toric portion of the contact lens to properly orient in the eye of the wearer. The toric lenses are manufactured by moving a pallet containing at least half of a casting cup assembly and an information tag under a filling assembly and filling half of a casting cup assembly with liquid monomer, then moving the pallet to a closing assembly and, based on information obtained from the information tag, rotating one or both halves of the casting cup assembly and closing the casting cup assembly. The liquid monomer is then cured thereby creating a toric contact lens.

Description

Be used for making automatically the device that the astigmatism correction contact lenses also carry out method of printing and realize this method in the above
The application is that the series number submitted on September 24th, 1997 is the continuation of 60/059,932 interim U. S. application.
Background of invention
Astigmatism is the defective of eyes, can correct by the eyeglass that singly grinds according to non-spherical optometry.On patient's optometry is single, be typically expressed as cylindrical optometry and make singly at least that the part of lens surface has toroidal shape.Therefore, this eyeglass is called toric lens.
Although the rear surface of contact lenses is generally bulbous configuration, when being used for astigmatism, the rear surface has the double-curved surface structure.That is, the curvature portion at eyeglass rear portion has major axis and minor axis; The radius of curvature of eyeglass rear surface is long at short-axis direction at the long axis direction ratio.Consequently, the rear portion of eyeglass is not to have bulbous configuration, but has the double-curved surface structure, and wherein major axis is vertical with minor axis.The toric major diameter diameter than overall eyeglass usually is little, and cuts into the initial basis curved surface with bulbous configuration.
The necessary wearer's relatively of correcting lens eyes are correctly directed.That is, the eyeglass summit of expectation must be on the summit of wearer's eyes.This is no problem for common glasses, because eyeglass for good and all is fixed on the mirror holder, is in correct gyrobearing.The leg of spectacles of mirror holder and bridge of the nose supporting leg guarantee that the eyes that mirror holder and eyeglass can relative wearers rotate.For contact lenses, the orientation changes all the time.Function at contact lenses is under the situation of astigmatism, and this is unacceptable.
The soft contact lens that is designed for astigmatism is known in this technical field.Common this eyeglass relies on certain ballasting method to make eyeglass be in correct position on eyes.The desirable eyeglass that is used for astigmatism has good spin orientation.Promptly after putting on, the eyeglass summit of expectation should be in the summit of wearer's eyes.As long as eyeglass repairman measured deviation also considers that with it optometry of eyeglass is single, allow with the small deviation in correct orientation.
Desirable eyeglass also provides good rotational stabilization.That is, wear in the process whole, eyeglass should remain on fixing gyrobearing in eyes.And when wearing, eyeglass all should occupy identical orientation at every turn.Certainly, eyeglass is thin more and lens surface is level and smooth more, and the wearer can feel that eyeglass is comfortable more.
According to eyeglass of the present invention soft contact lens preferably, it can constitute with many materials, comprise various other materials that hydroxyethyl methacrylate, metallorganic material, silicon rubber and those skilled in the art know.Desirable soft contact lens is hydrophilic; That is, their suctions, and in fact, water is the part of their structures.The known hydrophilic contact lens of this technical field those of ordinary skill is desirable especially for implementing the present invention.
Had certain hour although be used for the contact lenses of astigmatism, the manufacturing cost of this eyeglass does not descend along with the time.The high reason of cost maintenance is that the manufacture of eyeglass is little, and this part is owing to need the eyeglass of many varying numbers.For example, if rotate the configuration toric lens, then may must make 36 kinds of different eyeglasses to consider the single possible eyeglass sum of every kind of optometry according to 10 degree counterweight deviations.A kind of structure that this and non-toric lens need differs widely.And, because single less, so the quantity of toric lens even still less than above-mentioned 36 to 1 ratio with the astigmatic optometry of the single-phase ratio of normal non-double-curved surface optometry.
Summary of the invention
The method that the invention provides automatic manufacturing toric contact lens described herein, this method greatly reduces relevant cost.By between the casting cup, providing accurate, programmable rotary alignment, can make toric lens with the similar speed of non-toric lens, wherein the change of double-curved surface optometry list can not cause the shut-down of manufacture process.Automatically filling and closed machine obtain about waiting to make the information of toric lens from the pallet that comprises the casting cup.After this information was sent to filling and closed machine, programmable controller started filling and closed machine, was operating when making specific toric lens, and this machine has accurate double-curved surface rotary alignment.In case made the eyeglass of some, programmable controller will obtain new information and operate and rotate to new rotary alignment will cast cup assembly from next label tray, have the toric lens of different double-curved surface rotary alignments with manufacturing.This operation allow with make the multiple toric lens that different rotary is aimed at that has in manufacturing has identical or similar time of needed time of equal number contact lenses of identical double-curved surface rotary alignment.Can make with making in identical time in enormous quantities the same needed time of toric lens than the toric lens of small lot.
An object of the present invention is to provide a kind of equipment, this equipment can be exactly with the molded casting cup of liquid monomer filling in the motion of accurately control, and will cast the cup two halves, be that front curve and base curve are ressembled, between the two halves of casting cup, keep accurate, programmable rotary alignment simultaneously.
Another object of the present invention provides by a half-sum of loading molded contact lenses casting cup with liquid monomer utilizes programmable accurate filling and closing apparatus to make the method for astigmatism or toric contact lens, is programmed to make second half casting cup assembly rotary alignment ground close on the first half with the manufacturing toric contact lens.
Another object of the present invention provides the method for automatic change casting cup assembly rotary alignment, can not shut down or not need the single toric lens of the new optometry of ground manufacturing conversion time whereby.
Another object of the present invention provides full automatic print system with the anterior accurately printing axis orientative feature at contact lenses, with help correct assembling toric contact lens and raising stability on wearer's eye.
The pallet that another object of the present invention provides by comprising toric contact lens is inserted into the next method of axis direction feature accurately of printing automatically in Printing Zone by conveyer on toric lens.Utilize information encoded then, printing equipment is coated in the axis direction mark on the silicon printing blanket automatically, and the position of mark is determined by information encoded.Then, contact lenses are kept in position, make and to coat axis direction feature or iris seal.At last, the casting cup is placed into the position that is used for video check, thus the position of the axis direction feature on the checking casting cup.
By with reference to the accompanying drawings with following detailed description to the embodiment of the invention, can see these and other key character and advantage of the present invention significantly.
Accompanying drawing is briefly described
Fig. 1 is the vertical view according to filling of the present invention and closed machine;
Fig. 2 is the display part according to Programmable Logic Controller of the present invention;
Fig. 3 is the side view of filling and closed machine;
Fig. 4 is the front view according to filling of the present invention and closed machine;
Fig. 5 is the vertical view according to printing machine of the present invention;
Fig. 6 is the side view according to printing machine of the present invention;
Fig. 7 is the vertical view of pallet used according to the invention;
Fig. 8 is the vertical view of casting cup used according to the invention;
Fig. 9 is jaw and a casting cup flange used according to the invention.
The detailed description of the embodiment of the invention
Fig. 1 is used for making automatically astigmatism correction or toric contact lens and the vertical view of the present device of printing thereon.Automatically filling and closed machine 10 are made up of pallet feeding transfer assembly 14, double-curved surface filling and closed box-shaped assembly 16, pallet unloading assembly 18 and Programmable Logic Controller 20.
What cross virtual feeding conveyer and pallet feeding conveyer 14, double-curved surface filling and closed infrastructure component 16 and pallet unloading assembly 18 is pallet conveyer 22.The pallet conveyer moves to double-curved surface filling and closed infrastructure component 16 to handle with each pallet 24 from pallet feeding conveyer 14, and the solidified holding tray 25 that will comprise the casting cup assembly 26 that fills then is sent to pallet and unloads assembly 18 with further processing.Each pallet 24 comprises many casting cup assemblies 26 that are used to make toric lens, preferably 8.
Programmable Logic Controller 20 is preferably away from machine 10, to give operator 30 maximum proximity to the production area.Programmable Logic Controller 20 can be a kind of in many commercially available controllers, preferably uses the Allen-Bradley of Rockwell Software RSLogix500 software, the SLC500 Programmable Logic Controller.The software that is used to control filling and closed machine 10 is trapezoidal software protocol.Programmable Logic Controller 20 utilizes touch screen displays 28 to import and import data.As shown in Figure 2, touch screen displays 28 also is used for manual operation filling and closed machine 10.Described in automatic filling and the closed mode, it is to be controlled from the information that receives attached to 27 (see figure 7)s of the information labels on the pallet 24 according to controller 20 by Programmable Logic Controller 20 that correct double-curved surface rotation is set as following.The desirable form of information labels 27 is the sensor label by the Pepperl-Fuchs manufacturing together with the Pepperl-Fuehs reader.Also can use the information labels of other form, as bar code system, other readable media and touch memory.
Pallet unloading assembly 18 is by first separator 32 as shown in Fig. 1 and Fig. 3 and second separator 34, and pallet unloading conveyer 36 is formed.Pallet unloading assembly 18 has also utilized four latch 38 and two pneulifts 40.When filling with after closed operation finishes, the pallet of handling is transported to pallet by conveyer 22 and unloads conveyer 36 to be cured.
Figure 4 shows that the front view of filling and closed infrastructure component 16.This infrastructure component 16 mainly comprises pick-and-place closed motor, leading screw 44 and comprises closed 46 of going up of jaw 47.The motor 42 that uses with leading screw 44 is mentioned and is put down closed head or pick-and-place head 46 and opening and closing jaw 47.On filling and closed infrastructure component 16, also have calibration to transmit servo control mechanism 48 and rotation driving stepping motor and controller 50.Filling and closed infrastructure component 16 have also utilized to follow the tracks of in batches and have read district 52 and batch track record district 54.
As described below and with reference to figure 1,3 and 4 according to the present invention, filling and closed machine 10 are used to make the astigmatism correction contact lenses automatically.
The purpose of filling and closed machine 10 is accurately to load molded casting cup 26 with liquid monomer in the motion process of accurately control, preferably front curve-concave surface is cast cup, and will cast the cup two halves, be that front curve-concave surface and base curve-convex surface are ressembled, between the two halves of casting cup, keep accurate, programmable rotary alignment simultaneously.
For realizing this operation, pallet or a plurality of pallet 24 are loaded on filling and the closed machine 10.Be in tram on the pallet feeding conveyer 14 in case controller 20 detects pallet 24, pallet 24 just is transported to the appropriate location on the conveyer 22.Solidified holding tray 25 is deposited on one of separator 32,34 simultaneously.Linear-motion actuator, preferably Barrington Automation linear-motion actuator will run to its highest line journey, this means that all pallets are all stacked good and with latch 38 lockings.Utilize pneulift 40 that whole pallet heap is mentioned, the distance of mentioning be preferably 1 inch 30/1000ths, discharge latch 38 then.Start the mid-stroke cylinder then, they stretch out fully, and linear-motion actuator will fall.Because bottomed cylinder is bigger than linear-motion actuator strength, so actuator will be stuck on the mid-stroke.Whole pallet heap will descend preferably 3/4 inch of the distance of decline, or the thickness of pallet.Start latch 38 below with whole pallet heap locking, pile but allow single solidified holding tray 25 to leave pallet.Mid-stroke cylinder and linear-motion actuator are withdrawn fully, and this takes back the pallet heap downwards with pallet, makes it can be used in this operation.
Because pallet 24 and solidified holding tray 25 have been ready to for using, so can handle closed work station.When pallet 24 when conveyer 22 moves, it arrives filler, preferably Oyster Bay pump unit.Signal sends to the pump unit, and the pump unit operations is to load the front curve cup with monomer.Pallet 24 arrives pick-and-place head 46 belows along conveyer 22 then.Controller 20 starts servo control mechanism 42, makes closed 46 to descend and closed pawl 47.Pawl 47 is grabbed out front curve casting cup from pallet 24.For utilizing pawl 47 to grasp, comprise a V-arrangement pin 56 in the pawl 47.The V-arrangement recess 58 that has an indent in the front curve casting cup flange 60.V-arrangement pin 56 is used for grip flange 60 exactly, neither can be loose excessively, and can tension yet.
By moving both vertically, pawl 47 takes out front curve casting cup from the hole of pallet 24.Pallet 24 has special C clamp 62, and this folder is fixing in position with cup, only allows minimum rotation to cooperate clamp pin device 47, keeps angle orientation simultaneously in the entire process process.
Then, jaw 47 is placed into down the front curve of prefill casting cup in closed 64 (not necessarily need the casting of prefill front curve glass).Following closed head has alignment pin, and pin will be cast cup flange V-arrangement recess 58 and be placed into down exactly in closed 64.The casting cup is fixed on the V-arrangement indent, simultaneously the V-arrangement recess is placed into down above the alignment pin of closed head.The structure of jaw 47 meets this requirement.
With sensor label 27, this label passes to Programmable Logic Controller 20 with information on the pallet 24.The information that passes to controller 20 by the Pepperl-Fuchs reader allows controller 20 configuration filling and closed machines 10, makes it possible to make specific toric lens.According to the information of transmitting, following closed 64 rotates to correct double-curved surface rotation desired location.Although machine 10 may make down closed 64 to be maintained fixed and to rotate closed 46, preferably rotation is gone up closed 64.Rotation realizes that by stepping motor 50 this electric tools is useful on the integrated encoder of positive position feedback.
The base curve cup moves back and forth below pick-and-place head 46, is grasped and takes out from pallet 24 by protruding V-arrangement recess jaw 47.Because the front curve cup has been in correct axis desired location, so the base curve cup does not rotate.C clamp 62 in the pallet is finished two functions.They only allow cup to carry out very little rotation to aim at according to jaw 47, also provide the interference fit of casting cup in pallet 24 to make the casting cup keep concordant when hitting to be subjected to pushing away in fast moving treatment step process.
Then, drive by servounit, the programmable closed casting glass group that moves downward of jaw 47.This moves downward mentions the cantilevered weights of adjusting closing force.Then, unnecessary monomer is discharged from casting cup chamber, thereby finishes closed operation.Pick-and-place head 46 rises, and will cast cup assembly and pull up.Following closed 64 rotates back to its original position and waits for next circulation.
The conveyer 22 of suit is transported to pick-and-place head 46 belows with solidified holding tray 25 then, and the casting cup assembly is placed in the solidified holding tray 25.Solidified holding tray 25 also has C clamp 62 with the position of control casting cup in pallet.Solidified holding tray 25 is placed on the conveyer 22 and further handles then, and pallet 24 turns back to pallet 24 and handles the position.
In case toric lens have cured and cast the cup two halves separate, just can print.Below with reference to Fig. 5 and 6 printing process is described.
Printing process has used full automatic printing machine 66.The purpose of this machine is an axis direction feature in the anterior accurately printing of contact lenses.This helps judicious assembling of doctor and the stability of eyeglass on patient's eyes.
Printing machine 66 is used in combination with the tray design of fixing half casting cup (contact lenses that comprise curing) by the interference fit operation.Casting cup is press-fitted on the base curve profile on the pallet, and the external diameter of pallet is bigger approximately than the internal diameter of base curve casting cup.0005 to the .001 inch.Have on the large diameter slightly pallet in case the casting cup is placed on, base curve casting cup just maintains static basically, can as described belowly print then.
Printing machine 66 has also utilized a kind of tray design, this tray design have with at similar C clamp 62 described in filling and the closed machine 10.The purpose of C clamp 62 is to make base curve casting cup attached on the pallet and allow only have very little rotation.In base curve casting cup is inserted into process on the print tray, the midpoint alignment that this print tray C clamp 62 will rotate by latch and its angle.This aligning for guarantee casting cup and V-arrangement recess jaw 47 consistent be necessary, this jaw makes casting cup 26 accurately locate in printing process.
Printing machine feeding conveyer 68 receives from the product tray 25 of preprinted drying box and gathers pallet for handling.With feeding gather conveyer 68 side by side be second conveyer or virtual feeding conveyer 70, this conveyer allows printing with the pallet and the empty casting cup of eyeglass.This second conveyer 70 is used for the position accuracy of check bearing feature under the situation of not wasting product.This two pallets 25 rows have sensor label or information labels 27 and pass to print controller 20 so that bulk information and axis are set.
That any one (which no matter uses) among pallet 25 row will be pulled to will be servo-drive, suit, on the calibration conveyer 72, glass take Printing Zone 78 to cast.Calibration transfer system 72 can be programmed and be passed system by different way adapting to the various desirable conditions of production with mobile pallet 25, as makes last pallet quicken the system of leaving to clear up to carry out batch.
Before the axis direction mark can be placed on the eyeglass, mark must be coated on the silicon printing blanket 74.This is by being installed in vehicularized X, Y﹠amp; The ink delivery system at THETA navigation system top is accurately realized.Three axles of navigation system are driven by stepping motor, and this motor has and is connected prestrain and do not have integrated encoder in the design of gap leading screw capstan winch.Guide rail and swivel bearing are that antifrictional prestrain design is to guarantee the highest degree of accuracy and repeatability, so that the standard deviation minimum of product.
The rotation type-bed also has the X﹠amp of the manual adjustment that is positioned at the journal bearing top; The Y forked tail platform.This forked tail platform is marked on the journal bearing etched axis direction and correctly aims at.Also etching has cross-hair on the exact position of forme middle distance axis direction feature, allows to aim in advance forme.By adjusting manual X﹠amp; The Y dovetail guide can be aimed at forme in advance so that the cross-hair on the forme is aimed at the cross-hair in short distance telescope or optical fiber camera and the watch-dog.In case after correct the adjustment, can rotate to new axis direction desired location for each batch product type-bed, and need not adjust X﹠amp; Y.This can raise the efficiency and print accuracy so that production capacity reaches maximum.
Two casting cup locator platforms are arranged.First location and fixing casting cup are to coat axis direction feature and iris seal.Owing to partly rotatably aim in filling and close stage front curve casting cup, axis direction rotates to be complementary with filling and closed rotary alignment when printing.Second platform location casting cup is to use with the video monitor station.The position of monitor station check axis orientative feature on the casting cup.If desired, this system also utilizes information dynamically to adjust X, Y and THETA position on the motorization rotation type-bed.This system allows from dynamic(al) correction and can reliably produce, and does not need the operator to note always.
Two positioning tables all have protruding V-arrangement recess, and this recess grasps the casting cup on the recessed V-arrangement recess 58 of flange 60.Pallet 25 is shifted onto unloading conveyer 80 from the calibration conveyer 72 of suit then, and this unloading conveyer allows to carry out any other processing.
Although described the present invention in conjunction with the preferred embodiments, this does not mean that the present invention is confined to described specific embodiment, on the contrary, present invention resides in this replacement scheme, modification and equivalent in the spirit and scope of the invention that limits as appended claim.

Claims (11)

1, makes the method for astigmatism correction contact lenses, comprise the steps:
A) pallet that will comprise the first half toric lens casting cup and information labels is placed on the conveyer;
B) pallet is placed into below the filling assembly;
C) load described the first half toric lens casting cup with liquid monomer;
D) described pallet is placed in the closing assembly;
E) information is delivered to Programmable Logic Controller from described information labels;
F) rotate the second half toric lens casting cups according to the information that is delivered to Programmable Logic Controller;
G) described the second half toric lens casting cup is closed on the described the first half toric lens casting cups, thereby produces closed casting cup assembly;
H) described pallet is removed from described closed casting cup assembly;
I) described liquid monomer is solidified.
According to the manufacture method described in the claim 1, it is characterized in that 2, described information labels is a sensor label.
According to the manufacture method described in the claim 1, it is characterized in that 3, described information labels is a bar coded sticker.
According to the manufacture method described in the claim 1, it is characterized in that 4, described the first half toric lens casting cup is a base curve toric lens casting cup, described the second half toric lens casting cups are front curve toric lens casting cups.
According to the manufacture method described in the claim 1, it is characterized in that 5, described the first half toric lens casting cup is a front curve toric lens casting cup, described the second half toric lens casting cups are base curve toric lens casting cups.
According to the manufacture method described in the claim 1, it is characterized in that 6, the described filling of the described first casting cup occurs in described the second half toric lens casting cups and is closed into after described the first half toric lens casting cups go up.
7, according to the manufacture method described in the claim 1, it is characterized in that, describedly make described the second half toric lens casting cup be closed into described the first half toric lens casting cups to utilize C clamp and V-arrangement recess jaw to realize.
8, according to the manufacture method described in the claim 7, it is characterized in that, describedly make described the second half toric lens casting cup be closed into described the first half toric lens casting cups also to utilize cantilevered weights to realize.
9, the method for printing axis azimuth mark on the astigmatism correction contact lenses comprises the steps:
A) will comprise information labels is placed on the conveyer with the half casting cup that has toric contact lens;
B) pallet is placed into the Printing Zone;
C) the axis direction mark is coated onto on the silicon printing blanket;
D) the described half casting cup in location is to be coated with the axis direction mark;
E) information is delivered to Programmable Logic Controller from described information labels;
F) according to the axis direction that is delivered to the information rotation azimuth mark of Programmable Logic Controller;
G) with described axis direction label print to described toric contact lens;
H) described pallet is shifted out from described Printing Zone.
According to the printing process described in the claim 9, it is characterized in that 10, described information labels is a sensor label.
According to the printing process described in the claim 9, it is characterized in that 11, described information labels is a bar coded sticker.
CN98811215A 1997-09-24 1998-09-24 Method for automatic manufacture of and printing on astigmatic contact lenses and apparatus therefor Expired - Fee Related CN1087218C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5993297P 1997-09-24 1997-09-24
US60/059932 1997-09-24

Publications (2)

Publication Number Publication Date
CN1278758A true CN1278758A (en) 2001-01-03
CN1087218C CN1087218C (en) 2002-07-10

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CN98811215A Expired - Fee Related CN1087218C (en) 1997-09-24 1998-09-24 Method for automatic manufacture of and printing on astigmatic contact lenses and apparatus therefor

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US (2) US6471891B1 (en)
EP (1) EP1017558B1 (en)
JP (1) JP3670582B2 (en)
KR (1) KR20010024267A (en)
CN (1) CN1087218C (en)
AR (1) AR013512A1 (en)
AT (1) ATE399634T1 (en)
AU (1) AU746437B2 (en)
BR (1) BR9812544A (en)
CA (1) CA2304853C (en)
DE (1) DE69839673D1 (en)
TW (1) TW380212B (en)
WO (1) WO1999015327A1 (en)

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CN102387910A (en) * 2009-04-09 2012-03-21 诺瓦提斯公司 Process and apparatus for the automatic manufacturing of different toric optical lenses
CN105358313A (en) * 2013-06-26 2016-02-24 库柏维景国际控股公司 Methods of manufacturing and apparatus useful in manufacturing toric contact lenses

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ATE399634T1 (en) 2008-07-15
EP1017558A4 (en) 2004-08-11

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